forked from OSchip/llvm-project
52 lines
1.6 KiB
Python
52 lines
1.6 KiB
Python
import binascii
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import six
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if six.PY2:
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import commands
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get_command_output = commands.getoutput
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get_command_status_output = commands.getstatusoutput
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cmp_ = cmp
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else:
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def get_command_status_output(command):
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try:
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import subprocess
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return (
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0,
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subprocess.check_output(
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command,
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shell=True,
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universal_newlines=True).rstrip())
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except subprocess.CalledProcessError as e:
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return (e.returncode, e.output)
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def get_command_output(command):
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return get_command_status_output(command)[1]
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cmp_ = lambda x, y: (x > y) - (x < y)
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def bitcast_to_string(b):
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"""
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Take a string(PY2) or a bytes(PY3) object and return a string. The returned
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string contains the exact same bytes as the input object (latin1 <-> unicode
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transformation is an identity operation for the first 256 code points).
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"""
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return b if six.PY2 else b.decode("latin1")
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def bitcast_to_bytes(s):
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"""
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Take a string and return a string(PY2) or a bytes(PY3) object. The returned
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object contains the exact same bytes as the input string. (latin1 <->
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unicode transformation is an identity operation for the first 256 code
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points).
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"""
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return s if six.PY2 else s.encode("latin1")
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def unhexlify(hexstr):
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"""Hex-decode a string. The result is always a string."""
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return bitcast_to_string(binascii.unhexlify(hexstr))
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def hexlify(data):
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"""Hex-encode string data. The result if always a string."""
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return bitcast_to_string(binascii.hexlify(bitcast_to_bytes(data)))
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